I would like to start off by saying this game has excellent sounds, they are very crisp and rich with bass. The EVA announcements are great and are needed for many game play reasons. If you were not warned about an incoming nuke/ion or if you were not told which of your buildings are being attacked then this game would simply be too chaotic and difficult to manage. Defensive EVA messages are absolutely crucial to this games ability to work IMO.
But the EVA announcements are over the top and need to be toned down, redundant and unimportant messages should really be looked in to being removed or having options be created under audio settings allowing the player to modify which EVA sounds are played. One message i find myself not needing to ever hear is when a building in the enemy base is under attack. This is simply put, unimportant, for two reasons. Reason 1 is that I am either attacking the enemy base currently and can see which buildings are being attacked making the message redundant, or reason 2 is that I am defending our base and have no interest in what is being attacked in the enemy base. There is simply never a reason for me to know that the enemies Hand of Nod is being attacked by some guy with a automatic rifle, being destroyed is another thing. Changing this one option alone will seriously tone down the amount of EVA announcements being spammed at the player.
As it is right now, one thing that is making this game feel very flawed and broken is the overlapping and unneeded messages.